Tipping body



J. W. FIELDS TIPPING BODY Aug. 5, 1958 4 Sheets-Sheet 1 Filed June 2. 1955 In 2/972 to)" J'072 72 William fl'elds Par/5?)" Carle) Aug. 5, 1958 J. w. FIELDS TIPPING BODY Filed June}. 1955 4 Sheets-Sheet 2 5y Par/re?" & 47562 Aug; 1953 J. w. FIELDS 2,846,267

TIPPING BODY Filed June 2, 1955 4 $heets-Sheet s v In M??? for Jbk n ZZz'am j z'eZds J. W. FIELDS Aug. 5, 1958 TIPPING BODY 4 Sheets-Sheet 4 Filed June 2, 1955 Jf/arneys United States Patent TIPPING BODY John William Fields, Oklahoma City,

Anthony Company, Streator, nois Okla, assignor to 111., a corporation of Illi- This invention relates to a tipping truck and to the provision of means for tipping or dumping a body or container which is carried by a tractor-trailer combination. It has for one object to provide means for directly raising one end of the body or container to tip it.

Another object of the invention is to provide, in connection with a tractor-trailer body assembly, means exerting an upwardly directed body tipping force between the tractor and that end of the body nearest the tractor for directly raising that end of the body into tipping position.

Other objects will appear from time to time throughout the specification and claims.

The invention is illustrated more or less diagrammatically in the accompanying drawings, wherein:

Figure l is a side elevation of one form of the device;

Figure 2 is a horizontal section taken on an enlarged scale at line 22 of Figure 1;

Figure 3 is a side elevation of the structure of Figure l with the body or container in the raised position;

Figure 4 is a transverse vertical cross section taken at line 4-4 of Figure 1;

Figure 5 is a plan view on an enlarged scale showing one form of a fifth wheel by means of which the trailer may be connected to the traction unit;

Figure 6 is a vertical section taken at line 66 of Figure 5 showing the fifth wheel, kingpin, upper fifth wheel and associated parts; and

Figure 7 is a side elevation showing diagrammatically a system in which a traction unit has mounted in part upon it and attached to it a trailer to which a second trailer is connected.

Like parts are indicated by like characters throughout the specification and drawings.

The invention in the form shown is applied to a tractor trailer combination and comprises a tractor or power unit of any suitable nature. Only so much of the tractor unit is shown as is necessary for an understanding of the device. The combination includes, in addition to the tractor, a container or platform or so-called tipping body fastened to the tractor preferably through a fifth wheel to permit relative movement when the assembly is driven along the road. This arrangement is conventional and is well-known generally in connection with tractor-trailer truck assemblies. The body or container is supported at its rear end upon a conventional wheel and axle assembly which will normally include suitable springing means. The invention is not limited to the particular arrangement of wheels at the rear of the body.

In addition to the parts thus far described, the assembly includes a telescopic or other hydraulic piston and cylinder assembly joined to an upper fifth wheel and adapted to be supported on the truck preferably in alignment with the center of rotation of the fifth wheel and arranged to exert its lifting efiect preferably directly upon the forward end of the truck body or container. Draft means, in addition to the hoisting means, are arranged and they are connected to the truck through the fifth 2,846,267 Patented Aug. 5, 1958 wheel, to which they are joined and to the body or its frame so that the pulling or draft effect of the truck is exerted through this draft means. The structure thus far described generally will be described in detail below.

The tractor or tractive means above described comprises a frame 1, an axle 2, wheels 3 and may include a cab 4. Springs 5 may be included, if desired, and, conventionally, springs of some sort are generally used.

A transverse platform or supporting member 6 extends between the frame portions 1 of the tractor, as shown particularly in Figures 2 and 4, and upon it there is supported for rotation about a generally vertical axis a socalled upper fifth wheel or foot member 7.

A piston and cylinder hoisting assembly is mounted upon the upper fifth wheel for swinging movement and is preferably aligned with the axis of rotation of the upper fifth wheel or foot member. In the particular form here shown the hoisting means includes a telescopic cylinder and piston.

The lower and outermost member of the hoisting assembly comprises the cylinder 8 which is provided with a trunnion portion 9 through which a shaft 10'extends. The shaft is received in bearings 11, 11 attached to the upper fifth wheel or foot member 7 and may also be received in relatively smaller bearings 12, 12 also attached to the upper fifth wheel or foot member 7. By tlns means the hydraulic piston and cylinder assembly is arranged for swinging. In the particular form here shown the assembly includes additionally a cylinder 13 within the cylinder 8 and a cylinder 14 within the cylinder 13. The hoisting assembly includes a piston rod 15 secured to a piston, not shown, within the cylinder 14. The telescopic piston and cylinder assembly may be of almost any suitable design and a conventional telescopic hoist may be used. Pressure fluid is supplied to the cylinder assembly by means of a pipe or passage member 16 which may be flexible, if desired, and is connected to a source of pressure fluid such as a pump carried on the tractor and driven from the tractor engine or from some other source of power.

Pivoted also to the upper fifth wheel or foot member and to the shaft 10 is a draft member or assembly which in the form here shown is of the type referred to as an H frame. As shown, it includes two longitudinal members 17, 17 joined by one or more transverse or cross members 18, 18. The forward end of the members 18 have bearing portions 19 which are positioned about the shaft 10. The rearward ends of the draft members 17 have bearing portions 20 which are positioned about a shaft 21. This shaft is supported by bearing portions 22 fixed on the frame members 23 of the body. These frame members are joined by one or more transverse parts 24 and define a generally rectangular frame upon which a body or container 25 is positioned. This body may be of any desired form. As shown, it is of generally rectangular plan and may include at its upper edges flanges 26. It is supported upon wheels 27 generally at its rear end. The details of the wheels and the axle or other supports for them and any spring arrangement are not shown as they form no essential part of the invention. Normally a tailgate will be provided. That has been omitted because for some purposes none will be needed and the details of the tailgate, if one is present, form no essential part of the invention. The forward end of the body is preferably closed by a forward transverse wall 28.

A housing 29 overlies the piston and cylinder assembly,

as shown particularly in Figures 1 and 4. It may be pro- 1 3 are=fixed to the..housing..29.adjacent itsupperend; as shown particularly in Figure 4, and by this means the piston 15 'is' connected tothe housing 29am through it to the frame members 23 by means of which the body or thelock bar is withdrawn"from thvposition 'shownin dotted lines in Figure 5, the latch members are not against rotation and the pin 40' may be moved nto locking position or away from that position to permit, thus, en-

contaiuer cit-platform is supported. 5 gagement of the pin or disengagement of the pintor conlnipartieularl it isunderstoodnhat-the'trailer or tractor. meeting or disconnecting a trailer from the traction unit. may. embody. any sort of ground contac'ting', members.- When the lock bar is moved to the position of Figure 5 1t The'inventionis notlimited tov wheeled vehicles. Vehiclesprevents movement of the latch members and thus holds ofthejtypmhaving.belttreads, as now currently usedjon the pin 40 against disengagement. The springs 47 are heavy'load carrying.vehiclesand military tanks, are.with-. biased to move the lock bar into the locking position. in tlie'contemplationof the invention as fullyand equally Any othersuitable engaging and disengaging means-may as are wheeled vehicles. The invention isalso understood be usedto join a trailer removably to the tractiom'unit. to includethe' use of tr'ailersand semitrail'ers. Wherethe Several such are available on the market at the present word trailer-f" appears in the claims, it is to be'unden and the particular form-shown ismerely'illustrative-of the stood; therefore, ascoveringboth s'emitrailer'sandtrailers. fact that means are provided for attaching the trailer to In "general'the expression semitrailers has been. used in a traction unit and fordisengaging it when 'desired. the'past to apply to vehicles in-whiohpart ofthe load of in Figure 7 there is shown means for a system of the vehicle, when inoperative association with atractor, hauling and dumping in which two trailers are used. is-s'upported byjor. from tlie'tractor. andflalso,v the expres- Thefirst trailerrests .in part upon'the' traction'unib'and sion,trailer has generally been used'todesignate. a veis substantially thesameas that shown in the preceding, hicle complete, in itself in the sense. that it is fully.supfigures It differs from them only in the fact: that: it; ported'byits own running gear and is not carried or supis provided with connection means to which. a seconds ported in part by the tractor which draws it. For the purtrailer may be connectedand in the further fact-that: pose of simplicityand to avoid repetitionin this specificait has attachedst'o it pressure lines by means of. which ti'orrand' claiins, it.is to bef-understood thattheword pressure. fluid-- may be delivered from the same source trailer? includes both. trailers and semitrailers and both. as that fromwhich it is-delivered'to the-leadingtracton are illustratediiithe drawings andldescribed in the specifie Then-showing of Figure 7 thus differs from that of Figure cation, Althoughthe device shown particularly. inithe- 1 primarilysin the fact thatfa second trailer is added and first four, figures would normallyfbe describedas a semin that.connection-means'for it are added: trailerf since, itis in. part= supported upon the traction. A second trailer is shownrin Figure Tandcomprisesw unit, the.word.trailer is to be understood-as covering it a tippingbody 52 carried at its rear upon" wheels-:53 and a'srmeaningflany comparable vehicle which is drawn which are carried on an-axle andlany suitable runninga froinatraction-unit and is not self-propelled, gear. Springs, which are not shown, willxnormal'lybc In Figures, 5, and. 6 there is shown a typicaland con 0, included in the assembly. Since the trailerfifl is intendventionalfifth wheel trailer attachment means. In its deed to dump at the rear end, a tail gate willnormally tails it is not claimed Other means for detachably atbe added;andsuehtailgates beingwell known andrgentachiriga-trailer to thetraction unit might be used and erally conventional,- none-.isshownin order' to simplify. any-suitable, such means is withinthe contemplation ofthe.overallnshowingz The same is true of the leading the. invention. Asshown in detail in Figures S. and 6, a trailer which appears in the severalzfigures; The-trailfifthlwheelw member,.35 of generally rounded plan is er b'ody szrmay be supported onia frame-"S4 a'ncl' is mounted onthecrossmember 6 of-the traction .unit.: It attached to thatframe'. Atits forwardr end the' rearis preferably rigidly mounted thereon. so that it neither trailer is carried on: asupporting. assembly which intilts. nor rotates. It is provided with outwardly diverging. eludes aframe andwhcels or other' runninggear'fid jaw members 36'between which is a tapering, opening-3,7. AnIupper fifth wheel? is shown and it maybe secur'edto- Thisopeningnarrows to.agenerally.straight-sidedslotSS 5 a main fifth wheel assembly, including: the member-35; which mayxbe. rounded-at its inner end,- as at 39.-- The as shown-in: Figures 5 and 6; Actually as shown-in plat'elike. foot orwupper fifth wheelmember .7 which-ap Figure 7 there-is present the fifth wheel member 35 pears in the other. figures is also: shown in. these figures whichappearssin.FiguresSand 6. A piston andcylinder andcarries thepiston and cylinder.assemblyaandthedraft. assembly identical with that shown on the leading *trailen arms 17. .A pin-40 issecured to the: member:7 and as5 is usedninwand:appears in the following trailer 52' and shown-particularly: in Figure-.6, is providedwithanzen it is therefore not describedand carries the same refer- Iargedhead portion 41. ence-numeralsas those. used in thedescription'of the When-,thetrailer is tobe-secured-to thetractor the two piston and. cylinder assembly where it is referred to are movedrelativelyso that the..pin-40 is brought between above. A pairrof traction bars or traction elements-57, themembers 36 -and:fi.'nally into theslot 39 .andto-tbe-55 preferably'identi'cal:with' the traction bars-or elements position showninFigureSat the inner end :of the slot 38. 17 ofv the ':leadingtrailer, is used'and they are positioned" Inlthis'vmovement.thelpin 40 contacts the cam faces 42 I in.-the-.same manner as described above incon'nection of'tlatch. members 43.- These-members are preferably with the-leadingtrailerwhere it is shown indetail 'in pivoted, or otherwisemovably mounted, as at 44,.andare- Figures l and Z; ofsuch thickness as to fit above the head41 and to em- In the 'form shown-in Figure 7 the leading trailer-is brace-the pin,40.as shown-in Figures 5 vand 6. providedwith a connection-receiving me1nber58' to which 45.is-a. lock bar slidably mounted in or supportedby a connector or draft -bar 59 is secured. This draft bar thejfifth'wheelmember35. It is.provided.with a pointed. is secured ialso" to'the member 55 of the following endr46 which, in the lockingposition, is carried by-springs trailer; 'Together themembers 58- and 59 furnishmeans 47, to aposition .of restbetween the shoulders. of the: for joining the :trailers: together so thatthe following latch members 43. In thisposition the latch members trailer is pulledfrorn the leading trailer and the-two cannot.swing. .apart, and remainwlatched to hold the'pin40 are -connected for' swinging to permit turning and' the against displacement; .The springsAT, as-shown, are-se-. like.-. The-connectionvmeans are generally conventional cured at suitable points to therlatch-members 43 and. to andneed-notbe 'shown'in detail. the lock bar 45. It iszpreferable-to provide on the tractora'single source A lock'operating-shaft 49 is journaledin suitable. bear of pressure fluid' 'a'nd'. it is indicated diagrammatically ings, preferablyin the'fifth wheel member 35, and is-pro-rin Figure] as comprisinga pump' 6l); The pump is: vid'e'd with'an operating handle portion 50.: It isprovided connected to the. pistonand cylinder assembly on the- 1 alsowitha lever. 51Iwhich engagesthe lock bar. 45 and. leadingirailer: by a line land it is connected to'the bymean'siof"which'thelock bar may be moved. When.- piston. and cylinder assembly onsthe following traile'ii- E by. a second line 62. A joint 63 in this second line permits connecting and disconnecting the line when the leading trailer and the fOllOWlllg; trailer are to be disconnected.

Valve means, indicated diagrammatically as at 64 in Figure 7, are provided for accomplishing the dumping of the two trailers separately and selectively.

Although I have shown an operative form of my device, the invention is not limited to the particular details shown. Many changes may be made in the form, shape and arrangement of parts without departing from the Spirit of the invention. In particular, the invention is not limited to any special running gear. Wheels, traction belts and the like may suifice. Nor is the invention limited to any spring arrangement or tail gate arrangement. Since these are conventional in each case, they have not been illustarted and they are not claimed. Although it is preferable that the trailers be connected to the traction units removably, if desired they may be made nonremovable so that the leading trailer and tractor may, if desired, be secured together as a permanent articulated load-carrying assembly.

The member 35 is a generally conventional fifth wheel. The member 7 has been called an upper fifth wheel, since it rests on the main fifth wheel 35, when the tractor' and trailer are connected. The member "7 may be called also a foot since it acts as a base for the cylinder 8 and the draft members 17. It may be of any plan so long as it is of suflicient size to receive the parts 8 and 17 and to act as a base for them, either on the fifth wheel 35 or on any other support.

The use and operation of this invention are as follows:

The device of this invention in the form shown comprises a complete tractor and trailer unit articulated about a fifth wheel assembly and including draft means whereby the trailer unit comprising the dumping body, its frame, if any, andits running gear are connected to the tractor unit. In addition to this mechanism, which comprises the load-carrying and power units, there is a tipping means and in the particular form here shown the tipping means comprises the piston and cylinder assembly. It is supported on the tractor unit and preferably on the fifth wheel'and is connected to the body or to its frame. When it is desired to tip the body, fluid under pressure is introduced into the piston and cylinder assembly. This pressure fluid elongates the assembly and since one end of the assembly is fastened to the tipping platform body or receptacle, that end is raised and the body is tipped. During the tipping movement the draft member or means revolves about a radius, the center of which is its pivot point on the fifth wheel of the tractor. As the piston and cylinder assembly raises the forward end of the body to tip it, the rear wheels which support the rear end of the tipping body move forwardly from the position of Figure 1 to that of Figure 3. Raising of the forward end of the body to tip it thus causes the rearward end of the body to move forwardly as the result of the raising and tipping action. The tipping action is, of course, caused by the elongation of the hydraulic piston and cylinder assembly under the forward end of the body. The tipping of the body would occur whenever the piston and cylinder assembly is elongated and the effect of the draft connection is, so far as the tipping is concerned, to move the rear end of the tipped body or platform forwardly as the result of the. tipping which is caused by the direct action of the piston and cylinder assembly on the forward end of the body. The draft connectionalso controls the swinging action of the cylinder and limits it.

The invention in the particular form here shown is applied to an open-topped body or container but the same general structure and the same essential operation would be provided in the event that the device had no side walls and comprised merely a load-carrying platform. The

ass-doe? invention is, therefore, not limited to any particular details of the construction of the load-carrying members and when the word body is used in the specification and claims,. it is to be understood as meaning any member mounted on the trailer and tipped from the tractor which is usable as a load-carrying means. For the purposes of this invention it is immaterial whether or not the trailer is normally or frequently disconnected from the tractor. In some cases the trailer and tractor assembly will comprise a unit which is not disconnected in normal use and for other purposes the trailer assembly may be disconnected from the tractor so that the tractor may be used for other purposes and to pull other sorts of loads than that comprising the particular tipping or dumping trailer shown.

The operation of the device shown in Figure 7 differs only from the operation of the device shown in the earlier figures by the necessity of dumping two or more dump units, one after the other. When a plurality of such units is assembled together in a train, as shown in Figure 7, they will normally be dumped one after the other. Thus the train will be brought to a point at which the rear or following trailer is in position to be dumped. The valve means will be operated to direct pressure fluid through the line 62 and to the piston and cylinder assembly of the following trailer and the body 52 will be dumped as the trailer is tipped due to theextension of the piston and cylinder assembly. After the dumping of the following trailer is complete, it will be disconnected from the leading trailer and that trailer will then be moved to the point at which it is desired to dump it, whereupon the valve means will be operated to direct pressure fluid to the piston and cylinder assembly of the leading trailer and it will be dumped. Although only two trailers appear in train, more might be used and the process above described for dumping the two would follow generally the same steps mentioned, one trailer being dumped after the other until all have been dumped, in each case the dumped trailer being normally disconnected before a trailer in line ahead of it is dumped. After the completion of the dumping, the trailers may be reconnected and the train may proceed to a point of further filling if desired.

I claim:

1. In combination an automotive tractor, a fifth wheel thereon, a load-carrying body, ground-contacting means for said load-carrying body connected thereto at a point separated from said tractor, an upper fifth wheel, means for connecting said upper fifth Wheel and said tractor draft means of substantially fixed length under all operating conditions connected to said upper fifth wheel and to said load-carrying body for relative movement with respect to said fifth wheel and to said load-carrying body, a hydraulic piston and cylinder assembly pivoted adjacent one end thereof upon said upper fifth wheel and at its other end connected to said body for relative movement with respect to said body, and means carried by said tractor for supplying pressure fluid to said piston and cylinder assembly to cause its elongation and thereby to raise the forward end of the body and to tip it.

2. In combination an automotive tractor, a fifth wheel thereon, an upper fifth wheel member removably supported by said first fifth wheel, a load-carrying body, Wheels for said load-carrying body connected thereto at a point separated from said tractor, draft means of substantially fixed length under all operating conditions connected to said upper fifth wheel member and to said loadcarrying body for relative movement with respect to said fifth Wheel and to said load-carrying body, a hydraulic piston and cylinder assembly pivoted adjacent one end thereof upon said upper fifth wheel member and at its other-end connected to said body for relative movement with respect to said body, and means carried by said tractor for supplying pressure fluid to said piston and cylinder assembly to cause its elongation and thereby to raise the forward end of the body and to tip it.

3. In combination an automotive tractor, a fifth wheel thereon, an upper fifth"wh'eel member removably supported fl'OIl'lfSHld first fifth wheel, a load-carrying body, ground-contacting means for said load-carrying body connected thereto at a point sep'aratedfrom said tractor, draft means ofsubstantially fixed length under all operatingconditions pivotally connected to said upper fifth wheel member and to said load-carrying body for relative movement with respect to'said fifth Wheel and to said load-carrying body, a hydraulic piston and cylinder assembly pivoted at one end thereof upon said upper fifth wheel member coaxially with respect to the pivotal connection of said draft means thereto and at its other end connected to'said bodyfor relative move'ment'with respectto said body, and means carried by said tractor'for supplying pressure fluid to said piston and cylinder assembly to cause itselongation and *therebyto raise the forward end of the'body'and to tip'it.

'4. A trailer comprising 'a body, ground-contacting members connected to said body, means connected to said body for rotating said'body about'said ground-contacting members, said means comprising a piston and cylinder assembly pivoted at one end .to said body at'a forward portion thereof, a foot member pivotally connected to and carried by said piston and'cylinder assembly and a draft member of substantially fixed length underall'operating conditions pivotally connected at 'its opposite ends to said foot member and to said body. p 1

5. A trailer comprising a body, ground-'corit'aeting members connected to said body beneath arearporti'on thereof, means connec'tedto said bodyfor Trotatingsaid body about said ground-contacting members,'saidmearis comprising a piston "and cylinder assemblypivoted at one end to said body at a forward portion thereof, 'aj foot member pivotally connected to and 'ca'rrijedbysaidpiston and cylinder assembly, and a generallyjrigiddraft iriniber of substantially fixed lengthunder all opera in conditions pivotally c'onnectedatits opposite ends to said fobtfjme'mber'and to'said body.

6. A'trailer comprising a body;ground-contacting rnembers connected to said'body beneath a rear portion thereof means connectedto said bodyi for rotating saidbodyabout said ground-contacting members,said'me'an's comprising a piston and cylinder assembly pivoted at one en'd'to said body at'a forwardlportion thereof, afoot me'mberfpivotally connected toand carried by said piston and cylinder assembly,'and a generally rigid draft member 'of siibstantially fixed length under all operating conditions'pivob ally connected at its opposite en'dsto saidfootfm'ember and to saidbody,saiddraft'memberbeing pivotally connected to said body member at a "point generally'intermediate thepoints at which said ground-contacting members and said hydraulic member are connected to said body.

7. For use'with atractor having a fifth WheeLatr'ailer body, said trailer body having ground-contacting members connected thereto adjacent a rear portion thereof, an expandable hydraulic piston'and cylinder 'assembly pi'votally connected to saidtrailer adjacent aflfoi'ward portion thereof, a generally rigid'dra'ft memberof substantially fixed length under all operating conditions pivotally connected at one end to said trailer, a connector rnemberon the trailer positioned to be supported onthe fifth wheel of a tractor, said hydraulic'cylinder and said draftrmember being pivotally connected at their opposite .ends to said connector memb'eiy'andmeans' for'securing said connector member in operative relation to the fifth wheel of said tractor whereby saiddraft member is effective to-insure motion of s'aidQgrQund-cOntacting members toward said tractor duringexpansion of "said piston and cylinder assembly.

I '8. For use with a tractor'ha'vinga fifth wheel, a'tr a'iler body, said trailer body having ground-contacting wheels connected thereto beneath a rear portion thereof, 'means carried -by saidtrailer body for-tiltingsaid body abbut'apivot supported by said wheels and for moving said wheels to'war'd's'aid tractor, said means including a hydraulic cylin-. der pivoted at one end to a forward portion of said trailer body, a draft member of substantially fixed length under all operating conditions pivotally connected at one end to said trailer body at a point between said wheels and saidhydr'aulic cylinder, a foot member for said, trailer, said hydraulic cylinder and said draft member having their opposite ends connected to said foot member for pivotal movement about a common axis, said' foot member' having a portion thereof positioned for engagement with the fifth wheel of said tractor for securement thereto' wheel of a tractor, a connector element secured to said foot member and positioned thereon for 'securement to said fifth wheel on the tractor, a hydraulicpiston and cylinder assembly pivotally mounted at one end on's'a'id foot member and a generally rigid draft member'of substantially fixed length under all operating conditions pivotally mounted at one end on said 'foot member.

10. In combination an automotive tractor and aloadcarrying trailer, said trailer including wheels and aloadcarrying member, a draft member, means connecting the draft member to the load-carrying trailer and to the tractor, said connecting means including articulated joint members, connecting the load-carrying trailer and the tractor respectively, the point of connection between the draft member and the load-carrying trailer being forward of the wheels of the load-carrying trailer, a'fluid pressure piston and cylinder assembly carried solely'by the trailer, at a point forward of the point of connection of thedraft member thereto and positioned to react upon the tractor substantially at the point of connection of the draft member thereto, and means for supplying pressure fluid to said piston and cylinder assembly to cause it to move in elongation and thereby to raise the forward end of said load-carrying member to tip it, the draft member being effective during the tippingmovement to cause the loadcarrying member and the tractor to approach each other.

11. In combination an automotive tractor, a trailer attachment meants thereon, a foot member removably supported by said trailer attachment means and movable with respect thereto when so'supported, a load-carrying body, ground-contacting supporting members for said load-carrying body connected thereto at a point separated from the point of attachment to-said tractor, a fluidpressure piston and cylinder assembly mounted upon said "foot member 'for movement with respect thereto and 'connected to said load body at a forward portion thereof for movement with respect thereto, draft means connecting said tractor and said load-carrying body for relative movement with respect'to each other, said draft means including articulated connection means between its op- 12. In combination an automotive tractor, atrailer at tachment means-thereon, a foot member removably sup-- ported by said trailer attachment means andmovable with respect theretowhen so supported, a load-carrying body, ground-contacting supporting members for said load-carrying body connected thereto at a point separated from the point of attachment to said tractondraft means joined to said foot member for movementin'relation thereto and connecting said tractor and said load-cafrying body for relative movement with respect to each other, i a fluid pressure piston and cylinder assembly mounted upon said foot member for movement with respect thereto and connected to said load-carrying body for movement with respect thereto, and means carried by said tractor for supplying pressure fluid to said piston and cylinder assembly to cause its elongation and thereby to raise the forward end of the body to tip it, raising of the body for tipping being effective to cause relative movement of the body and tractor whereby the groundcontacting members of the body and the tractor approach each other.

2,148,798 Barrett Feb. 28, 1939 10 Kirksey July 18, 1939 Powers Feb. 17, 1948 Lewis May 3, 1949 Black Feb. 10, 1953 Watson Apr. 21, 1953 Schonrock Dec. 1, 1953 Hunter et al. Aug. 17, 1954 FOREIGN PATENTS Great Britain June 29, 1922 Great Britain June 30, 1927 Notice of Adverse Decision in Interference In Interference No. 91,129 involving Patent No. 2,846,267, J. W. Fields, Tipping body, final judgment adverse to the patentee was rendered June 14, 1962, as to claim 10.

[Ofiicz'al Gazette October 16, 1.962.] 

